Learnyst Downloader

Info

Please open an issue if you're getting a 419 error when requesting an lst license.
The error is caused by learnyst changing the api version.

Requirements

• Python 3.12
• L3 CDM

Installation

• Install the requirements: python -m pip install -r requirements.txt
• Download and Install Playwright Chromium playwright install chromium
• Place either the mp4decrypt or shaka-packager binary in the bin directory. Make sure they're named correctly.
• Place either the ffmpeg or mkvmerge binary in the bin directory. Make sure they're named correctly.
• Place your CDM in the cdm folder

Usage

Enter your authToken cookie when first starting the program

Note

Enter the full URL, even if you're downloading PDFs, as they're not downloaded automatically along with the video.

usage: python learnyst.py [-h] --url URL [--debug]

Author: github.com/DevLARLEY

options:
  -h, --help    show this help message and exit
  --url URL     Full course URL
  --debug, --d  Print debug information

Example output

[INFO]: Verifying token...
[INFO]: Requesting course id...
[INFO]: Requesting course data...
[INFO]: Content Type => ENCRYPTED_VIDEO
[INFO]: Getting signed URL...
[LOG] Installed Player Polyfills
[LOG] EmeEncryptionSchemePolyfill: EME not found
[LOG] McEncryptionSchemePolyfill: Waiting to detect encryptionScheme support.
[INFO]: Getting license request...
[INFO]: Requesting lst license...
[INFO]: Decrypting lst license...
[INFO]: Setting lst license...
[INFO]: Setting drm data...
[INFO]: Decrypting file...
[LOG] Reading input data...
[LOG] Decryption started...
[LOG] Returning...
[INFO]: Downloading vHQStream.mp4...
100% [........................................................................] 53729798 / 53729798
[INFO]: Downloading aStream.mp4...
100% [........................................................................] 23104604 / 23104604
[INFO]: Decrypting vHQStream.mp4 (this can take a while)...
[LOG] Reading input data...
[LOG] Decryption started...
[LOG] Warning: Enlarging memory arrays, this is not fast! 16777216,53870592
[LOG] Warning: Enlarging memory arrays, this is not fast! 53870592,64684032
[LOG] Returning...
[INFO]: Decrypting aStream.mp4 (this can take a while)...
[LOG] Reading input data...
[LOG] Decryption started...
[LOG] Returning...
[INFO]: Getting license request...
[INFO]: Requesting lgdrm license...
[INFO]: Decrypting lgdrm license...
[INFO]: Decrypting using mp4decrypt...
[INFO]: Decrypting using mp4decrypt...
[INFO]: Muxing using mkvmerge...
Warning: Quicktime/MP4 reader: Track ID 0 has more than one FourCC. Only using the first one (0x61766331 "avc1": AVC/H.264/MPEG-4p10) and not this one (0x61766331 "avc1": AVC/H.264/MPEG-4p10).
Warning: Quicktime/MP4 reader: Track ID 0 has more than one FourCC. Only using the first one (0x6d703461 "mp4a": AAC) and not this one (0x6d703461 "mp4a": AAC).
[INFO]: Decrypted Video/Audio => <video>.mkv